And for comparison, today you can do an economy round-trip flight with Delta Air Lines for roughly $1.6k (SEA-HND). A Delta One flight is roughly $8.5k. That's the apples-to-apples comparison.

Deregulation also allowed international carriers to sell to us too. An ANA round-trip on economy class is a couple hundred dollars cheaper. Their business class is similarly cheaper than Delta One.

Air travel is so much cheaper than it was back then that it is affordable for most people to take one international trip a year if they really want to. Even to exotic places in Asia or Southern Europe.